Item talk:Q230510
From geokb
{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Molecular aggregation of humic substances", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70021200", "url": "https://pubs.usgs.gov/publication/70021200" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70021200 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1097/00010694-199911000-00004", "url": "https://doi.org/10.1097/00010694-199911000-00004" }, { "@type": "PropertyValue", "propertyID": "ISSN", "value": "0038075X" } ], "journal": { "@type": "Periodical", "name": "Soil Science", "volumeNumber": "164", "issueNumber": "11" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Soil Science" } ], "datePublished": "1999", "dateModified": "2018-12-19", "abstract": "Humic substances (HS) form molecular aggregates in solution and on mineral surfaces. Elucidation of the mechanism of formation of these aggregates is important for an understanding of the interactions of HS in soils arid natural waters. The HS are formed mainly by enzymatic depolymerization and oxidation of plant biopolymers. These reactions transform the aromatic and lipid plant components into amphiphilic molecules, that is, molecules that consist of separate hydrophobic (nonpolar) and hydrophilic (polar) parts. The nonpolar parts of the molecules are composed of relatively unaltered segments of plant polymers and the polar parts of carboxylic acid groups. These amphiphiles form membrane-like aggregates on mineral surfaces and micelle-like aggregates in solution. The exterior surfaces of these aggregates are hydrophilic, and the interiors constitute separate hydrophobic liquid-like phases.", "description": "11 p.", "publisher": { "@type": "Organization", "name": "Kluwer" }, "author": [ { "@type": "Person", "name": "Wershaw, Robert L. rwershaw@usgs.gov", "givenName": "Robert L.", "familyName": "Wershaw", "email": "rwershaw@usgs.gov" } ], "funder": [ { "@type": "Organization", "name": "Toxic Substances Hydrology Program", "url": null } ] }, "OpenAlex": { "abstract_inverted_index": { "Humic": [ 0 ], "substances": [ 1 ], "(HS)": [ 2 ], "form": [ 3, 99 ], "molecular": [ 4 ], "aggregates": [ 5, 20, 101, 107, 115 ], "in": [ 6, 31, 108 ], "solution": [ 7 ], "and": [ 8, 33, 44, 54, 70, 89, 105, 118 ], "on": [ 9, 102 ], "mineral": [ 10, 103 ], "surfaces.": [ 11 ], "Elucidation": [ 12 ], "of": [ 13, 16, 18, 26, 29, 46, 66, 77, 82, 86, 93, 113 ], "the": [ 14, 27, 52, 78, 90, 119 ], "mechanism": [ 15 ], "formation": [ 17 ], "these": [ 19, 114 ], "is": [ 21 ], "important": [ 22 ], "for": [ 23 ], "an": [ 24 ], "understanding": [ 25 ], "interactions": [ 28 ], "HS": [ 30, 37 ], "soils": [ 32 ], "natural": [ 34 ], "waters.": [ 35 ], "The": [ 36, 74, 110 ], "are": [ 38, 80, 116 ], "formed": [ 39 ], "mainly": [ 40 ], "by": [ 41 ], "enzymatic": [ 42 ], "depolymerization": [ 43 ], "oxidation": [ 45 ], "plant": [ 47, 56, 87 ], "biopolymers.": [ 48 ], "These": [ 49, 97 ], "reactions": [ 50 ], "transform": [ 51 ], "aromatic": [ 53 ], "lipid": [ 55 ], "components": [ 57 ], "into": [ 58 ], "amphiphilic": [ 59 ], "molecules,": [ 60 ], "that": [ 61, 64 ], "is,": [ 62 ], "molecules": [ 63, 79 ], "consist": [ 65 ], "separate": [ 67, 122 ], "hydrophobic": [ 68, 123 ], "(non-polar)": [ 69 ], "hydrophilic": [ 71 ], "(polar)": [ 72 ], "parts.": [ 73 ], "nonpolar": [ 75 ], "parts": [ 76, 92 ], "composed": [ 81 ], "relatively": [ 83 ], "unaltered": [ 84 ], "segments": [ 85 ], "polymers": [ 88 ], "polar": [ 91 ], "carboxylic": [ 94 ], "acid": [ 95 ], "groups.": [ 96 ], "amphiphiles": [ 98 ], "membrane-like": [ 100 ], "surfaces": [ 104, 112 ], "micelle-like": [ 106 ], "solution.": [ 109 ], "exterior": [ 111 ], "hydrophilic,": [ 117 ], "interiors": [ 120 ], "constitute": [ 121 ], "liquid-like": [ 124 ], "phases.": [ 125 ] }, "apc_list": null, "apc_paid": null, "authorships": [ { "author_position": "first", "author": { "id": "https://openalex.org/A5022792336", "display_name": "Robert L. Wershaw", "orcid": null }, "institutions": [], "countries": [], "is_corresponding": true, "raw_author_name": "Robert L. 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